The mean diameter of the threads of a square-threaded screw is 50 mm. The pitch of the thread is 6 mm. The coefficient of friction m = 0.15. What force must be applied at the end of a 600-mm lever that is perpendicular to the longitudinal axis of the screw to raise a load of 18 kN? What force must be applied to lower the load?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The mean diameter of the threads of a square-threaded screw is 50 mm. The pitch of the thread is 6 mm. The coefficient of friction m =
0.15. What force must be applied at the end of a 600-mm lever that is perpendicular to the longitudinal axis of the screw to raise a load
of 18 kN? What force must be applied to lower the load?
Transcribed Image Text:The mean diameter of the threads of a square-threaded screw is 50 mm. The pitch of the thread is 6 mm. The coefficient of friction m = 0.15. What force must be applied at the end of a 600-mm lever that is perpendicular to the longitudinal axis of the screw to raise a load of 18 kN? What force must be applied to lower the load?
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